Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 95Get this manual

Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 95

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Fuel Line and Primer Bulb Assembly 1
The fuel inlet valve all ows fuel to fill primer bulb but
closes to prevent uel from returni ng to tank when bu lb is squeezedThe fuel outlet valve ope